 | | | Aspera SCP software | Aspera SCP software 2005-05-16 - By John Haxby
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Ed Wilts wrote:
>It does work well in practise. The wide-area SAN people use the same
>concept. What appears to happen is that the transfers may go over UDP
>instead of TCP so that you're not trying to ack every packet half-way
>around the globe but can ack them in bunches. The end result appears to
>be a more consistent data flow.
>
>
This sounds like windowing to me or am I missing something? tcp(7)
talks about setting the global read and write windows to deal with high
bandwidth or high latency connections. With large windows you don't
ack every packet, just every window'th packet don't you? (*)
jch
(*) The default window size in DECnet was, years ago, 3 packets. When
that was upped to, I think 8, on a particular transatlantic satellite
link the network performance increased so dramatically the common belief
was that we'd got a new, much faster link. I won't embarrass the now
defunct company in question by identifying them, let's just say that
they should've read their manuals.
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